heatindex: Heat index

In phytomosaic/vuln: Niche-based Vulnerability of Species and Communities

Description

Heat index based on temperature and relative humidity. Useful for describing simultaneously hot and moist conditions, such as those that may limit positive carbon balance for lichens.

Usage

heatindex(TC, RH, round = 3)

Arguments

TC	vector of temperature values (in Celsius).
RH	vector of relative humidity values (as a percentage [0,100]).
round	integer, number of digits to round to.
...	further arguments passed to other functions.

Details

The heat index approximates ‘experienced’ heat.

Value

vector of heat index values, in Celsius.

See Also

https://www.wpc.ncep.noaa.gov/html/heatindex_equation.shtml for the algorithm, and heat.index for a more complicated adaptation.

Examples

set.seed(99)
TC <- sort(runif(99, 5, 35)+1)
RH <- sort(runif(99, 50, 90))
par(mar=c(4,4,0,4), pty='s')
plot(RH, TC, ylim=c(0,80))
points(RH, heatindex(TC,RH), col=2)
axis(4, at = seq(0,80,len=5), labels = seq(0,80,len=5), col.axis=2)
mtext('Heat index', 4, line=2, col=2)

phytomosaic/vuln documentation built on Sept. 21, 2019, 8:23 a.m.